Description
EMT Intrusive Pig Signaller is a vital component for managing and monitoring pipeline systems, specifically engineered to confirm the movement of pipeline pigs as they navigate through the pipeline. This device enhances operational efficiency and safety by providing real-time feedback on the status of cleaning and maintenance operations.
1. Key Features and Specifications

- Product Name: Flag Flange Removable Pig Signaller
- Flange Materials: The signaller is available in a variety of durable materials, including:
- Stainless Steel 304: Renowned for its corrosion resistance and strong mechanical properties.
- Stainless Steel 316: Offers superior corrosion resistance, particularly beneficial in marine and chemical environments.
- DSS F51: A duplex stainless steel that combines high strength with excellent corrosion resistance.
- Carbon Steel A105N: A robust choice suitable for high-pressure applications.
- Inconel 625: A nickel-based alloy offering exceptional resistance to extreme conditions.
- Flange Pressure Ratings: The signaller accommodates various pressure requirements, available in classes:
- 150#
- 300#
- 600#
- 900#
- 1500#
- 2500#
This extensive range ensures effective utilization in both low and high-pressure pipeline systems.
- Operating Temperature Range: Engineered to perform effectively within a temperature range of -20°C to +120°C, making it suitable for diverse environmental conditions.
2. Types of the EMT Intrusive Pig Signaller
The EMT Intrusive Pig Signaller offers a range of options tailored to meet the diverse needs of pipeline operations, including:
- Trigger Types:

-
- Bi-directional: Confirms pig movement in both directions, ideal for pipelines with fluctuating flow.
- Bi-directional Feather: Features enhanced sensitivity for accurate detection of pig passage.
- Uni-directional: Specifically designed for pipelines with a single flow direction.
- Indicator Types:

-
- Manual Reset Flag: Provides clear visual confirmation of pig passage with a simple manual reset.
- Manual Reset Flag with Electrical Switch Output: Combines visual confirmation with automated alerts for integration into monitoring systems.
- Digital Display with Electrical Switch Output: Offers real-time information about pig movement, facilitating seamless integration into automated setups.
- Mounting Types:
- 2″ Flange Connection: Ensures easy attachment to existing pipeline flanges for straightforward installation.
- 2″ Welded Nipple: Provides a robust and secure permanent mounting solution.
- 2″ Welded Base with NPT Nipple Connection: Allows flexible installation in various pipeline configurations.
3. Applications and Benefits

The EMT Intrusive Pig Signaller is installed at key pipeline locations—including launching and receiving stations—to accurately confirm pig passage and enhance operational safety and efficiency in oil and gas transportation.
1. Real-Time Pig Tracking
Enables precise real-time detection of pig movement, allowing operators to monitor cleaning, inspection, or maintenance pigging cycles and verify pig location throughout the pipeline.
2. Prevents Blockages & Enhances Safety
Immediate detection of pig passage helps identify potential stuck-pig scenarios or flow restrictions early, reducing the risk of pipeline blockages, pressure build-up, and associated safety hazards.
3. Reduces Operational Downtime
Accurate tracking allows for optimized scheduling of maintenance and pigging activities, minimizing shutdown times and improving overall pipeline availability.
4. Customizable for Varied Pipeline Conditions
Supports multiple flange materials (e.g., stainless steel, carbon steel) and pressure ratings, ensuring compatibility with diverse oil and gas pipeline specifications and corrosive media.
5. Easy Integration and Installation
Designed for straightforward installation at critical points along the pipeline, facilitating quick deployment without major system modifications.









